I The problem with measuring short distances

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Higgsono
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When we try to measure shorter and shorter distances. eventually we have to put in so much energy into such a small space that it creates a black holes, thus makes it impossible see inside. So there is a limitation to how small distances we can measure.

Exacly how does this happen? Why do we need so much energy to measure a very short distance? How is the black hole created?
 
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Higgsono said:
When we try to measure shorter and shorter distances. eventually we have to put in so much energy into such a small space that it creates a black holes

Can you give a reference for where you learned this?
 
PeterDonis said:
Can you give a reference for where you learned this?

If you fast forward to 21m and 15 seconds in the following video, the speaker describes why there is a limit on how massive a elementary particle can be before it turns into a black hole.



(I realized after I posted this that it may not be what the original poster was referring to)
 
PeterDonis said:
Can you give a reference for where you learned this?

I'm sorry. I don't remember the references. I'm not sure what to search for either.
 
mike1000 said:
the speaker describes why there is a limit on how massive a elementary particle can be before it turns into a black hole

He doesn't say why; he just asserts it. To the best of my knowledge, it's not a proven theorem; it's just a plausible speculation in quantum gravity that most particle physicists think will be confirmed when we actually have a theory of quantum gravity.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!

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